نتایج جستجو برای: superordination

تعداد نتایج: 122  

2009
Rabha W. Ibrahim Maslina Darus Shaher Momani Nak Eun Cho Oh Sang Kwon H. M. Srivastava R. W. Ibrahim M. Darus S. Momani Marcel Dekker P. T. Mocanu

The purpose of the present article is to derive some subordination and superordina-tion results for certain normalized analytic functions involving fractional integral operator. More-over, this result is applied to find a relation between univalent solutions for fractional differentialequation.Full textAcknowledgement. The work presented here was supported by eScienceFund<lb...

Journal: :Journal of Mathematical Analysis and Applications 2012

Journal: :bulletin of the iranian mathematical society 2015
r. aghalary a. ebadian m. mafakheri

the purpose of this present paper is to derive some subordination and superordination results for certain analytic functions in the open unit disk. relevant connections of the results, which are presented in the paper, with various known results are also considered.

Journal: :international journal of nonlinear analysis and applications 2015
samira rahrovi

in present paper acertain convolution operator of analytic functions is defined.moreover, subordination- and superordination- preserving propertiesfor a class of analytic operators defined on the space of normalizedanalytic functions in the open unit disk is obtained. we also applythis to obtain sandwich results and generalizations of some knownresults.

2009
Saibah Siregar Maslina Darus Teodor Bulboacă

If H(U) denotes the space of analytic functions in the unit disk U, for the integral operator Aα,β,γ,δ : K → H(U), with K ⊂ H(U), defined by Aα,β,γ,δ[f ](z) = [ β + γ zγ ∫ z 0 f(t)h(t)t d t ]1/β , ( α, β, γ, δ ∈ C and h ∈ H(U) ) , we will determine sufficient conditions on g1, g2, α, β and γ such that zh(z) [ g1(z) z ]α ≺ zh(z) [ f(z) z ]α ≺ zh(z) [ g2(z) z ]α

The purpose of this present paper is to derive some subordination and superordination results for certain analytic functions in the open unit disk. Relevant connections of the results, which are presented in the paper, with various known results are also considered.

2012
Maslina Darus Imran Faisal M. Darus

Let A denote the class of analytic functions in the open unit disk U = {z : |z| < 1} normalized by f(0) = f ′(0) − 1 = 0. In this paper, we introduce and study certain subclasses of analytic functions. Several inclusion relations of various subclasses of analytic functions, coefficient estimates , growth and distortion theorems, Hadamard Product, extreme points, integral means and inclusion pro...

Journal: :sahand communications in mathematical analysis 2015
parisa hariri

in the present paper, we prove subordination, superordination and sandwich-type properties of a certain integral operators for univalent functions on open unit disc, moreover the special behavior of this class is investigated.

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